ATSAML11E14A-MU - 32MHz Cortex-M23 TrustZone MCU 16KB Flash | Microchip
Référence : ATSAML11E14A-MU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.45 | $3,45 |
| 10 | $3.1 | $31,00 |
| 100 | $2.78 | $278,00 |
| 500 | $2.46 | $1 230,00 |
| 1 000 | $2.18 | $2 180,00 |
ATSAML11E14A-MU Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and peripherals. Within the embedded hierarchy, the ATSAML11E14A-MU is an ARM Cortex-M23 core -> Cortex-M family -> 32-bit RISC processor -> embedded MCU -> semiconductor. The Cortex-M23 is the smallest and most energy-efficient ARMv8-M core, designed for IoT edge nodes that benefit from TrustZone-M for firmware isolation.
Key features include ARM TrustZone-M hardware isolation, secure boot with secure key storage, chip-level tamper resistance, and a True Random Number Generator (TRNG). Active-mode current is under 25 uA/MHz, and sleep-mode current drops below 100 nA, making the device suitable for battery-powered applications. The part supports 1.6V to 3.6V supply operation and includes a 32-bit Cortex-M23 core, 16 KB Flash, 8 KB SRAM, and a 32-pin VQFN package with an exposed thermal pad.
From an architectural standpoint, the SAM L11 integrates a Cortex-M23 core, a separate Cortex-M0+ core dedicated to secure-boot firmware, on-chip voltage regulation, and a TrustZone-aware bus matrix. The crypto block includes AES, SHA, and secure key storage; the peripheral set includes SERCOM, ADC, DAC, and timers. Together, these features provide defense-grade security at sub-dollar BOM cost.
Typical applications include IoT end nodes, secure sensor hubs, smart utility meters, medical wearables, and HomeKit/Zigbee/Thread/BLE bridge devices. For each use case, the MCU balances low active current, hardware-enforced secure/non-secure isolation, and a small 5x5 mm footprint.
When designing with the ATSAML11E14A-MU, allocate the secure region in the linker script and configure the TrustZone Attribution Unit (TAU) before non-secure code is generated. Use MPLAB X IDE with MCC harmony for peripheral configuration, and observe VDD decoupling guidelines from the SAM L11 datasheet.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop view of the part's value proposition.
Alternatives de remplacement direct pour ATSAML11E14A-MU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAML11E14A-MU (même facteur de forme et même empreinte) — différant par Package, Core, Flash Memory, Operating Temperature, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAML11E15A-MU
✅ Remplacement direct✓ En stock
$1.55 / unité
Voir la fiche technique →ATSAML11E14A-MUT
✅ Remplacement direct✓ En stock
$1.95 / unité
Voir la fiche technique →ATSAML11D14A-MUT
✅ Remplacement direct✓ En stock
$1.62 / unité
Voir la fiche technique →ATSAML11E14A-AUT
✅ Remplacement direct✓ En stock
$1.34 / unité
Voir la fiche technique →ATSAML11D15A-MU
✅ Remplacement direct✓ En stock
$1.95 / unité
Voir la fiche technique →ATSAML10E16A-MU
✅ Remplacement direct✓ En stock
$1.89 / unité
Voir la fiche technique →ATSAML11E14A-MU Valeurs maximales et caractéristiques électriques
| Core | ARM Cortex-M23 |
| Core Architecture | ARMv8-M (TrustZone-M) |
| Fréquence d'horloge maximale | 32 MHz |
| Program Memory Size | 16 KB (16K x 8) Flash |
| RAM Size | 8 KB |
| Supply Voltage Range | 1.6 V to 3.6 V |
| Plage de température de fonctionnement | -40 C to +85 C |
| Boîtier | 32-pin VQFN (5x5 mm) with Exposed Pad |
| Type de montage | Surface Mount |
| I/O Pins | 25 |
| Active Mode Current | < 25 uA/MHz |
| Sleep Mode Current | < 100 nA |
| Connectivity | I2C, LINbus, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Security Features | ARM TrustZone-M, secure boot, secure key storage, TRNG, tamper detection |
| Niveau MSL | MSL3 |
| Statut RoHS | Compliant |
Configuration des broches de ATSAML11E14A-MU
| Broche 1 | PA00 — GPIO / XIN (external clock input) |
| Broche 2 | PA01 — GPIO / XOUT (external clock output) |
| Broche 3 | GND — Ground |
| Broche 4 | VDDIO — Digital I/O supply voltage |
| Broche 5 | VDDIN — Main supply voltage input |
| Broche 6 | PA02 — GPIO / AIN[0] (ADC input) |
| Broche 7 | PA03 — GPIO / AIN[1] (ADC input) / VREFA reference |
| Broche 8 | PA04 — GPIO / AIN[2] / TC[0] WO[0] |
| Broche 9 | PA05 — GPIO / AIN[3] |
| Broche 10 | PA06 — GPIO / AIN[4] / SERCOM0 PAD[0] |
| Broche 11 | PA07 — GPIO / AIN[5] / SERCOM0 PAD[1] |
| Broche 12 | PA08 — GPIO / AIN[6] / NMI (non-maskable interrupt) |
| Broche 13 | PA09 — GPIO / AIN[7] |
| Broche 14 | PA10 — GPIO / AIN[8] / SERCOM0 PAD[2] |
| Broche 15 | PA11 — GPIO / AIN[9] / SERCOM0 PAD[3] |
| Broche 16 | PA14 — GPIO / XIN32 / SERCOM2 PAD[2] |
| Broche 17 | PA15 — GPIO / XOUT32 / SERCOM2 PAD[3] |
| Broche 18 | PA16 — GPIO / SERCOM1 PAD[0] / I2S FS |
| Broche 19 | PA17 — GPIO / SERCOM1 PAD[1] / I2S SCK |
| Broche 20 | PA18 — GPIO / SERCOM1 PAD[2] / I2S MCK |
| Broche 21 | PA19 — GPIO / SERCOM1 PAD[3] / I2S SDO |
| Broche 22 | PA20 — GPIO / SERCOM3 PAD[0] |
| Broche 23 | PA21 — GPIO / SERCOM3 PAD[1] |
| Broche 24 | PA22 — GPIO / SERCOM3 PAD[2] |
| Broche 25 | PA23 — GPIO / SERCOM3 PAD[3] |
| Broche 26 | PA24 — GPIO / USB DP (USB data plus) |
| Broche 27 | PA25 — GPIO / USB DN (USB data minus) |
| Broche 28 | PA27 — GPIO / TC[1] WO[0] |
| Broche 29 | RESET — Reset input (active low) |
| Broche 30 | SWDIO — Debug data |
| Broche 31 | SWCLK — Debug clock |
| Broche 32 | VDDCORE — Internal core voltage (decoupling cap) |
| Broche EP | Exposed Pad — Must be soldered to ground for thermal dissipation |
Applications typiques
ATSAML11E14A-MU convient pour 6 applications: IoT Edge Nodes with Secure Boot, Smart Utility Meters (Gas/Water/Electric), Wearable Medical Devices, HomeKit/Zigbee/Thread Bridge Devices, Battery-Powered Sensor Hubs, Secure Access Control / Smart Locks.
IoT Edge Nodes with Secure Boot
The ATSAML11E14A-MU is purpose-built for IoT edge nodes that require hardware-isolated secure firmware. Its ARM TrustZone-M creates an isolated secure domain for bootloaders and key storage, while non-secure application code runs in a separate memory region that cannot read or modify secure assets. With under 25 uA/MHz active current and sub-100 nA sleep current, the part enables multi-year battery life on coin cells. The 16 KB Flash is sufficient for Thread/Zigbee/BLE stacks when paired with an external radio. A reference design (AN2841) walks through provisioning secure keys via the TrustZone Attribution Unit.
Recommandé
Smart Utility Meters (Gas/Water/Electric)
Smart meters need tamper detection, secure key storage, and ultra-low standby current to meet 10-20 year battery life. The ATSAML11E14A-MU integrates chip-level tamper detection pins and a hardware TRNG for cryptographic metering keys. The Cortex-M23 at 32 MHz handles DLMS/COSEM or wireless M-Bus protocol stacks, while the SERCOM peripherals drive UART/I2C/SPI interfaces to metrology ADCs. The 1.6-3.6 V supply range accommodates single-cell Li-SOCl2 batteries. Reference firmware is available in the Atmel START / MPLAB Harmony ecosystem.
Recommandé
Wearable Medical Devices
Wearable medical patches and continuous glucose monitors require IEC 62304-considered firmware isolation, sub-100 nA standby current, and a tiny footprint. The ATSAML11E14A-MU delivers TrustZone-M isolation between safety-critical and non-critical code, a 5x5 mm VQFN package for thin-form-factor PCB integration, and ultra-low sleep current suitable for body-worn patches. The on-chip 12-bit ADC and DAC enable direct biosensor interfacing without external converters. The -40C to +85C temperature range covers skin and body-worn operating conditions.
Recommandé
HomeKit/Zigbee/Thread Bridge Devices
Smart-home hubs and bridges benefit from the ATSAML11E14A-MU's hardware root-of-trust and small footprint. The Cortex-M23 core can run a Thread/Zigbee/BLE stack with secure commissioning using the TrustZone-M isolated region for storing commissioning keys. The 32-pin VQFN layout keeps the MCU footprint under 25 mm² on the bridge PCB, leaving room for the radio module. The integrated DMA and 25 GPIO pins support multiple sensor inputs and RGB indicator LEDs on the bridge.
Recommandé
Battery-Powered Sensor Hubs
Industrial sensor hubs that aggregate data from multiple field sensors need long battery life, hardware-accelerated crypto, and small PCB area. The ATSAML11E14A-MU consumes less than 25 uA/MHz in active mode and less than 100 nA in standby, suiting 5-10 year battery life targets. The integrated AES and SHA blocks accelerate TLS handshakes without loading the Cortex-M23 core. The 25 GPIO pins provide ample connectivity for I2C/SPI sensor clusters and digital IO. The 1.6 V minimum supply allows direct operation from a single alkaline cell.
Recommandé
Secure Access Control / Smart Locks
Smart locks and access controllers need secure key storage, tamper detection, and reliable BLE/Zigbee connectivity. The ATSAML11E14A-MU's TrustZone-M isolates the BLE pairing keys and the tamper-detection firmware from the main application, preventing firmware-side attacks. The Cortex-M23 at 32 MHz handles BLE radio control via SERCOM and crypto operations via the on-chip AES accelerator. The wide 1.6-3.6 V supply range accommodates 4xAA or single-cell Li-ion battery packs. The exposed pad provides thermal relief for continuous RF transmission.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAML11E14A-MU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAML11E15A-MU | ATSAML11E14A-MUT | ATSAML11D14A-MUT | ATSAML10E16A-MU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-pin VQFN (5x5 mm) | 32-pin VQFN (5x5 mm) - same | 32-pin VQFN (5x5 mm) - same | 32-pin VQFN (5x5 mm) - same | 32-pin VQFN (5x5 mm) - same |
| Core | ARM Cortex-M23 (32 MHz) | ARM Cortex-M23 (32 MHz) | ARM Cortex-M23 (32 MHz) | ARM Cortex-M23 (32 MHz) | ARM Cortex-M23 (32 MHz) |
| Flash | 16 KB | 32 KB (+100%) | 16 KB (same) | 16 KB (same) | 32 KB (+100%) |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| TrustZone-M Hardware Isolation | Yes | Yes | Yes | Yes | No (SAM L10 family) |
| Secure Boot / Key Storage | Yes | Yes | Yes | Yes | No |
| Supply Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
Principaux différenciateurs
- Only Microchip Cortex-M23 with TrustZone-M hardware isolation (vs ATSAML10E16A-MU)
- Industry's lowest-power Cortex-M23 with sub-25 uA/MHz active (vs ATSAML11E14A-MUT)
- Doubles Flash without changing the PCB footprint (vs ATSAML11E15A-MU)
Notes de conception
The ATSAML11E14A-MU integrates a 1.2 V core LDO that derives from VDDIN (1.6-3.6 V). Decouple VDDIN with 1 uF + 100 nF X7R ceramics placed within 2 mm of the pin, and place a 1 uF X7R cap on VDDCORE (pin 32) for the internal regulator. In sleep mode, the part draws less than 100 nA with full RAM retention, which is critical for coin-cell battery life. Estimated: assuming a CR2032 (220 mAh) and 100 nA standby, the standby life exceeds 250 years. Use the Power Manager (PM) peripheral to gate unused peripherals.
The 32-pin VQFN package has an exposed thermal pad (pin EP) that must be soldered to a continuous ground copper pour for both electrical grounding and thermal dissipation. Without the EP soldered, junction-to-ambient thermal resistance rises sharply, and the device may throttle or trigger thermal shutdown under sustained Cortex-M23 + crypto load. Estimated: with 25 mm^2 of 1 oz copper on the EP, theta_JA is approximately 38 C/W; without EP soldering, theta_JA exceeds 100 C/W.
Place the SWDIO (pin 30) and SWCLK (pin 31) traces as short as possible (under 50 mm) and avoid crossing them with high-current or high-frequency signals to prevent debug probe noise. The RESET (pin 29) requires a 10 kOhm pull-up to VDDIO and a 1 nF cap to ground for noise immunity. Route the SERCOM and ADC analog signals on the inner PCB layers with a continuous ground reference plane below for signal integrity.
Do not skip TrustZone Attribution Unit (TAU) configuration in the linker script before generating non-secure code - the secure region must be locked before the first non-secure call or the security boundary is meaningless. The 16 KB Flash region is split between secure and non-secure; allocating too much to the secure bootloader leaves little for application code. Always program the user row (NVM bits) with the BOOTPROT and SECUMASK settings before production. The Cortex-M23 vector table offset register (VTOR) must point to the non-secure alias for application code.
The ATSAML11E14A-MU SERCOM peripherals support I2C, SPI, and UART modes with configurable drive strength. For I2C buses exceeding 100 kHz with multiple slaves, use 4.7 kOhm pull-ups (not 10 kOhm) to meet the rise-time spec. The 12-bit ADC has 1 MSPS throughput but is sensitive to digital switching noise; sample AIN inputs during DMA-driven modes and avoid sampling during active Cortex-M23 interrupt bursts. Add a 100 nF cap directly on each AIN pin used.
Informations de conformité
RoHS and REACH compliant per Microchip product page. AEC-Q100 not applicable - SAM L11 is not automotive-grade. For automotive applications, choose SAM S70/V70/V71 or ATSAMx automotive variants.
